March 2012
Volume 53, Issue 14
Free
ARVO Annual Meeting Abstract  |   March 2012
Assessment Of Glaucomatous Optic Disc Photographs By UK Optometrists
Author Affiliations & Notes
  • Shona E. Hadwin
    Optometry Department,
    Moorfields Eye Hospital, London, United Kingdom
  • Tony Redmond
    NIHR Biomedical Research Centre for Ophthalmology,
    Moorfields Eye Hospital, London, United Kingdom
  • David F. Garway-Heath
    NIHR Biomedical Research Centre for Ophthalmology,
    Moorfields Eye Hospital, London, United Kingdom
  • Hans G. Lemij
    Glaucoma Service, Rotterdam Eye Hospital (Oogziekenhuis Rotterdam), Rotterdam, The Netherlands
  • Nicolaas J. Reus
    Glaucoma Service, Rotterdam Eye Hospital (Oogziekenhuis Rotterdam), Rotterdam, The Netherlands
  • Gavin Ward
    NIHR Biomedical Research Centre for Ophthalmology,
    Moorfields Eye Hospital, London, United Kingdom
  • Roger S. Anderson
    NIHR Biomedical Research Centre for Ophthalmology,
    Moorfields Eye Hospital, London, United Kingdom
    School of Biomedical Sciences, University of Ulster, Coleraine, United Kingdom
  • Footnotes
    Commercial Relationships  Shona E. Hadwin, None; Tony Redmond, None; David F. Garway-Heath, Carl Zeiss Meditec (F), Heidelberg Engineering (F), Optovue (F); Hans G. Lemij, None; Nicolaas J. Reus, Pfizer (F); Gavin Ward, None; Roger S. Anderson, None
  • Footnotes
    Support  College of Optometrists iPRO Small Grants Scheme
Investigative Ophthalmology & Visual Science March 2012, Vol.53, 643. doi:https://doi.org/
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Shona E. Hadwin, Tony Redmond, David F. Garway-Heath, Hans G. Lemij, Nicolaas J. Reus, Gavin Ward, Roger S. Anderson; Assessment Of Glaucomatous Optic Disc Photographs By UK Optometrists. Invest. Ophthalmol. Vis. Sci. 2012;53(14):643. doi: https://doi.org/.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract
 
Purpose:
 

To investigate the performance characteristics of UK optometrists when assessing stereoscopic optic disc photographs for the presence of glaucoma.

 
Methods:
 

An online survey, which included questions about qualifications, time in practice and practice environment, was initially completed by 1256 optometrists. Based on their responses, 208 (17%) were selected to undertake a further online disc assessment exercise. The optometrists viewed 110 stereoscopic disc image pairs (from Reus et al, Ophthalmology, 2010), of which 40 were healthy, 48 were glaucomatous, 6 were ocular hypertensive, and 16 were duplicates. The task was to indicate whether the disc appeared healthy or glaucomatous. Fifty-three participants had higher glaucoma qualifications.

 
Results:
 

Sensitivity and specificity were calculated for each participant and are shown in the figure, alongside the results from Reus et al, representing the performance of European ophthalmologists. Median sensitivity was 0.92 (IQR: 0.86 - 0.94) and median specificity was 0.74 (IQR: 0.68 - 0.8). Sensitivity was higher for UK optometrists than for European ophthalmologists (2-tailed t-test; p < 0.05) but specificity was lower for optometrists (2-tailed t-test; p <0.05 ). Agreement between optometrists was fair (Fleiss' Κ = 0.367). Practitioners with higher glaucoma qualifications did not have overall higher sensitivity than those without (1-tailed t-test; p = 0.4), but had higher specificity (1-tailed t-test; p = 0.002). There was no notable relationship between either performance characteristic and time since initial optometry qualification (all r2 < 0.01).

 
Conclusions:
 

UK optometrists displayed high sensitivity and moderate specificity when assessing optic discs for the presence of glaucoma. Advanced glaucoma qualifications and the time since initial optometry qualification were not strong predictors of performance.  

 
Keywords: imaging/image analysis: clinical • optic nerve 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×